US8568260B2 - Toothed belt for use with oil and relative timing control system - Google Patents
Toothed belt for use with oil and relative timing control system Download PDFInfo
- Publication number
- US8568260B2 US8568260B2 US10/590,227 US59022704A US8568260B2 US 8568260 B2 US8568260 B2 US 8568260B2 US 59022704 A US59022704 A US 59022704A US 8568260 B2 US8568260 B2 US 8568260B2
- Authority
- US
- United States
- Prior art keywords
- toothed belt
- resistant
- elastomeric material
- oil
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013536 elastomeric material Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 50
- 229920001577 copolymer Polymers 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims abstract description 42
- 239000000178 monomer Substances 0.000 claims abstract description 38
- 125000002560 nitrile group Chemical group 0.000 claims abstract description 30
- 229920000034 Plastomer Polymers 0.000 claims abstract description 25
- 150000001993 dienes Chemical class 0.000 claims abstract description 25
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract 5
- 239000004917 carbon fiber Substances 0.000 claims abstract 5
- 238000000034 method Methods 0.000 claims description 44
- 239000000835 fiber Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 23
- 239000004816 latex Substances 0.000 claims description 21
- 229920000126 latex Polymers 0.000 claims description 21
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 6
- 239000004760 aramid Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
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- 230000008961 swelling Effects 0.000 claims description 4
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- 238000000576 coating method Methods 0.000 abstract description 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 32
- 235000019198 oils Nutrition 0.000 description 32
- 239000010410 layer Substances 0.000 description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- 230000007423 decrease Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 6
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- 239000000945 filler Substances 0.000 description 4
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- 239000000654 additive Substances 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 3
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- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229920006170 Therban® Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical class C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000010734 process oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
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- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 229940111121 antirheumatic drug quinolines Drugs 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000005266 diarylamine group Chemical group 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- WHALSQRTWNBBCV-UHFFFAOYSA-N s-aminosulfanylthiohydroxylamine Chemical class NSSN WHALSQRTWNBBCV-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 150000007970 thio esters Chemical class 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
- D02G3/18—Yarns or threads made from mineral substances from glass or the like
- D02G3/182—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure
- D02G3/187—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure in the sheath
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/04—Driving-belts made of fibrous material, e.g. textiles, whether rubber-covered or not
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/04—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a layer being specifically extensible by reason of its structure or arrangement, e.g. by reason of the chemical nature of the fibres or filaments
Definitions
- the present invention relates to a toothed belt and, in particular, a toothed belt for use with oil and to the relative timing control system.
- Toothed belts generally comprise a body of elastomeric material, embedded in which are a plurality of longitudinal filiform resistant inserts, also called “cords”, and a plurality of teeth covered by a coating fabric.
- Each component of the belt contributes towards increasing the performances in terms of mechanical resistance, to decrease the risk of breakage of the belt and increase the specific transmissible power.
- the coating fabric of the belts increases the abrasion resistance and hence protects the working surface of the belt from wear which is due to rubbing between the sides and the slopes of the teeth of the belt and the sides and the bottoms of the grooves of the pulley with which the belt interacts. Moreover, the coating fabric decreases the coefficient of friction on the working surface, reduces deformability of the teeth and above all reinforces the root of the tooth, thereby preventing breakage.
- the coating fabric used may be constituted by a single layer or, alternatively, may be a double layer to guarantee increased toughness and rigidity.
- the coating fabric is normally treated with an adhesive, for example RFL (resorcinol-formaldehyde latex) to increase adherence between the body and the fabric.
- RFL resorcinol-formaldehyde latex
- U.S. Pat. No. 4,099,422 relates to a toothed belt suitable for use in oil bath and comprising a body in elastomeric material, preferably epichlorohydrin, and a double fabric coating the teeth.
- the patent application EP0549401 relates to a toothed belt comprising a body formed of a first layer made of CSM or ACSM and a second layer on the side of the teeth formed of an HNBR matrix covered by a fabric treated with HNBR.
- a possible solution could be the use of a material with a much higher modulus than the one used in the toothed belts currently on the market, to form the resistant inserts of the belts, which define the modulus of the belts almost entirely.
- resistant inserts made entirely of carbon fibre could be used.
- the object of the present invention is therefore to obtain a toothed belt which can be used with oil or even partly immersed in oil without decrease in the performances of said belt and maintaining the necessary mechanical properties of adhesion, resistance to wear, precision of meshing and noise emission.
- a further object of the present invention is to allow chains and gears to be replaced without variations in the dimensions of the control system and therefore to use toothed belts of limited width.
- this object is obtained by a toothed belt as claimed in claim 1 .
- a timing control system as claimed in claim 25 is also provided.
- FIG. 1 shows a perspective and partial view of a toothed belt according to the invention
- FIG. 2 shows a diagram of a first timing control system using a first toothed belt according to the present invention
- FIG. 3 shows a diagram of a second timing control system using a second toothed belt according to the present invention
- FIG. 4 shows a diagram of a third timing control system using a third toothed belt according to the present invention
- FIG. 5 shows a schematic and enlarged section of a reinforcing insert for a toothed belt according to the present invention.
- FIG. 6 shows a graph of the values of decline in tensile strength of a belt according to the present invention compared with a belt produced according to the known art.
- a toothed belt is indicated as a whole with the number 1 .
- the belt 1 comprises a body 2 made of elastomeric material, embedded in which are a plurality of longitudinal filiform resistant inserts 3 .
- the body 2 has a first face provided with toothing 4 , which is covered in a coating fabric 5 , and a second side or back 6 of the belt.
- the back 6 is also covered in a fabric 7 .
- the fabric 5 which coats the toothing 4 is the same as the fabric 7 which coats the back 6 .
- the body 2 comprises as main elastomer, that is, present for more than 50 weight % with respect to the other elastomers used in the mixture, a copolymer formed from a monomer containing nitrile groups and from a diene.
- the copolymer used is hydrogenated acrylonitrile butadiene.
- the copolymer used is obtained from monomers containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
- the copolymer used is obtained from monomers containing nitrile groups in a percentage of 39 weight % with respect to the final copolymer, for example it is possible to use a mixture constituted by 50% of THERBAN 3446 (Bayer registered trademark) and by 50% of THERBAN 4307 (Bayer registered trademark).
- the mixture of elastomeric material also comprises fibres, preferably in a weight percentage between 0.5% and 15% with respect to the elastomeric material and preferably having a length between 0.1 and 10 mm.
- fibres allows adequate mechanical properties of the body mixture to be maintained.
- the mixture of elastomeric material may contain, in addition to the main elastomer, also other elastomers, and also conventional additives, such as reinforcing agents, fillers, pigments, stearic acid, accelerators, vulcanizing agents, anti-oxidants, activators, initiators, plasticizers, waxes, pre-vulcanizing inhibitors, and the like.
- filler carbon black or white filler may be used, which may generally be added in amounts between 5 and 200 phr, preferably approximately 70 phr.
- Talcum, calcium carbonate, silica and the like may also be added in an amount generally between 5 and 150 phr, or dispersions in oil containing fillers.
- Organosilanes may be used in amounts between 0.1 and 20 phr.
- Sulfur-donor vulcanizing agents may be used, such as amino disulfides and polymeric polysulfides, free sulfur, or organic or non-organic peroxides. The amount added varies according to the type of rubber and the type of vulcanizing agent used, and is generally between 0.1 and 10 phr.
- anti-degrading agents most widely used in the composition of the mixture are microcrystalline waxes, paraffin waxes, monophenols, bisphenols, thiophenols, polyphenols, derivatives of hydroquinone, phosphites, mixtures of phosphates, thioesters, naphtylamines, diphenol amines, derivatives of substituted or non-substituted diaryl amines, diaryl-phenylenediamines, para-phenylenediamines, quinolines, and amine mixtures.
- the anti-degrading agents are generally used in an amount between 0.1 and 10 phr.
- process oils examples include dithiobis-benzanilide, poly para-dinitrosobenzene, xylyl mercaptans, polyethylene glycol, petroleum oils, vulcanized vegetable oils, phenol resins, synthetic oils, petroleum resins, and polymeric esters.
- the process oils may be used in a conventional amount between 0 and 140 phr.
- stearic acid is conventionally used in an amount between 1 and 4 phr.
- Conventional additives may moreover be added, such as calcium oxide, zinc oxide, and magnesium oxide, generally in an amount between 0.1 and 25 phr.
- accelerators or combinations of accelerators are also used, such as amines, disulfides, guanidine, thiourea, thioazoles, thiols, sulphenamides, dithiocarbamates, and xanthates, generally in an amount between 0.1 and 100 phr.
- the fabric 5 coating the toothing 4 or the fabric 7 coating the back 6 can be constituted by one or more layers and can, for example, be obtained by means of the weaving technique known as 2 ⁇ 2 twill.
- the fabrics 5 , 7 are preferably constituted by a polymeric material, preferably aliphatic or aromatic polyamide, even more preferably by high thermal resistance and high tenacity polyamide 6 / 6 .
- each weft thread is constituted by an elastic thread as core and by at least one composite thread wound on the elastic thread, where the composite thread comprises a thread with high thermal and mechanical resistance and at least one coating thread wound on the thread with high thermal and mechanical resistance.
- a toothed belt 1 according to the present invention comprises a resistant layer 8 disposed externally to the fabric 5 .
- an adhesive 9 is also interposed between the fabric 5 and the resistant layer 8 .
- the resistant layer 8 is constituted by a fluorinated plastomer with the addition of an elastomeric material, the fluorinated plastomer being present in an amount greater in weight with respect to the elastomeric material.
- resistant layer usable is for example described in the patent EP1157813 to the same applicant.
- the fluorinated plastomer is preferably a compound based on polytetrafluoroethylene.
- the elastomeric material with which the fluorinated plastomer is mixed to form the resistant layer 8 is HNBR, even more preferably HNBR modified with a zinc salt of polymethacrylic acid, for example ZEOFORTE ZSC (Nippon Zeon registered trademark).
- the resistant layer 8 has a weight between 150 and 400 g/m 2 , equivalent to a average thickness between 0.050 and 1 mm.
- the fluorinated plastomer is present in amounts between 101 and 150 in weight per 100 parts of elastomeric material.
- the resistant layer 8 also comprises a peroxide as vulcanizing agent.
- the peroxide is normally added in amounts between 1 and 15 parts in weight with respect to 100 parts of elastomeric material.
- the resistant layer 8 is also disposed over the fabric 7 coating the back 6 , when said fabric 7 is present.
- the resistant layer 8 makes it possible to prevent oil from penetrating also on the side of the back 6 of the toothed belt 1 and is particularly advantageous when the toothed belt 1 is used in control systems wherein the back 6 of the belt is with pads or tensioners.
- the oil remains interposed between the contact surface of the pad or tensioner with the belt and the back of said belt and therefore penetration inside the mixture forming the body would be encouraged.
- the toothed belt 1 can be treated on all the external surfaces and, in particular, on the sides 10 where the body mixture is more exposed to the attack of oil, with a rubber resistant to swelling, for example ENDURLAST (Lord registered trademark).
- ENDURLAST Long Term registered trademark
- the resistant inserts 3 are of the “hybrid” type, that is, they are produced in at least a first and a second material.
- resistant inserts 3 produced in two different materials allows greater adhesion of the resistant insert 3 to the mixture constituting the body of the belt 1 and reduces the decline in tensile strength in fatigue tests when oil is present.
- the resistant inserts 3 are preferably treated with a resorcinol-formaldehyde latex based composition, known as RFL, and in particular with an RFL composition suitable to prevent oil absorption.
- RFL a resorcinol-formaldehyde latex based composition
- the RFL used comprises a latex formed from a monomer containing nitrile groups and from a diene, for example HNBR or hydrogenated butadiene acrylonitrile.
- the latex is obtained from monomers containing nitrile groups in a weight percentage with respect to the final copolymer similar to the preferred elastomeric material used to form the body of the toothed belt 1 described previously.
- the latex is preferably based on a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer, even more preferably based on a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight % with respect to the final copolymer.
- Both the first and the second material used to produce the resistant inserts 3 according to the present invention are preferably chosen in the group constituted by glass fibres, aramid fibres, polyester fibres, carbon fibres and PBO fibres.
- the first material preferably has a lower modulus than the second material and is preferably wound around the second material. The first material is therefore chosen to solve problems of compatibility with the mixture of the surrounding body and the second material is therefore chosen to obtain a higher modulus in the toothed belt.
- the second material occupies a surface between 15 and 75% with respect to the total surface of the section. Even more preferably, the second material occupies a surface between 45 and 55% with respect to the total surface.
- the first material is preferably glass fibre
- the second material is preferably carbon fibre. Even more preferably, the glass fibres are high modulus fibres.
- the glass fibres are wound around the carbon fibres to cover the carbon fibres externally at least partially and even more preferably to cover the carbon fibres entirely.
- the inserts according to the present invention have a twist of the “Lang's twist” type, that is, they have two twists in the same direction, as this construction has proven to be particularly effective.
- the toothed belt 1 is vulcanized according to common and known methods which are consequently not described in detail.
- FIG. 5 A purely indicative example of a resistant insert 3 produced according to the present invention is described below and shown in FIG. 5 , where the number 50 indicates 9 twisted yarns in a first material which entirely surround 1 twisted yarn, indicated with the number 51 and produced in a second material.
- the first material is glass fibre
- the second material is carbon fibre.
- the glass fibres are wound around the carbon fibres to cover the carbon fibres entirely.
- this resistant insert 3 glass fins are treated with a treatment based on an adhesive composition, for example RFL, and then twisted a first time to form a twisted yarn. Subsequently, a certain number of these twisted yarns are wound around a carbon fibre twisted yarn.
- FIG. 5 exemplifies the case in which the twisted yarns are 9.
- the twisted yarns form an insert with dimensions between 0.7 and 1.4 mm, in particular 1.15 mm if the construction is 34 tex 3*9, 400 tex*1.
- the first torsion to which the fins are subjected to form the twisted yarns consists in a number of torsions equal to 80 in a first direction S (clockwise).
- the second torsions to which the twisted yarns are subjected in winding around the carbon are again 80 and are performed in the same direction S to form resistant inserts “S”.
- the torsions to which the carbon fibre fins are subjected to form a twisted yarn are 40 and these are also in the same first direction S.
- resistant inserts 3 are also formed which are twisted both times in a direction opposite to the first direction, that is, in the direction Z (counter-clockwise) to form resistant inserts “Z”.
- the resistant inserts S and Z are then simultaneously deposited on the mould with a spiralling pitch between, for example, 2.6 and 3.2 mm and preferably 2.9.
- prior art toothed belts have resistant inserts made of high modulus glass which have modulus values at the most of 28 N/mm, where the modulus is defined as the force required to elongate by one millimeter a belt having a length of 1000 mm and a width of one millimeter.
- a belt comprising resistant inserts 3 according to the present invention has modulus values of over 28 N/mm, even more preferably between 28 and 50 N/mm; for example, with the construction of the resistant insert previously described a modulus value of 42 N/mm was obtained for the toothed belt.
- the belt 1 according to the present invention can be used, for example, in a timing control system for a motor vehicle of the type shown in FIG. 2 .
- the timing control system is indicated in the figure as a whole with the number 11 and comprises a driving pulley 12 fixed rigidly to the drive shaft, not shown, a first 13 a and a second 13 b driven pulley and a tensioner 14 to tension the toothed belt.
- a toothed belt according to the invention is indicated with the number 20 , with a toothing on both faces and therefore having a resistant fabric that covers both toothings.
- a toothed belt 20 can, for example, be used in a timing control system for a motor vehicle of the type shown in FIG. 3 .
- the timing control system is indicated in the figure as a whole with the number 21 and comprises a driving pulley 22 , fixed rigidly to the drive shaft, not shown, a first 23 a , a second 23 b and a third 24 driven pulley.
- a toothed belt 30 according to the present invention can advantageously be used in a timing control system indicated in the figure as a whole with the number 31 , which comprises a driving pulley 32 , fixed rigidly to the drive shaft, not shown, a first 33 a and a second 33 b driven pulley, a pad tensioner 34 and a pad 35 .
- FIGS. 2 to 4 refer to control systems relative to movement of the balancing countershafts, but it is clear that the toothed belt according to the present invention may also be used in “cam to cam” systems or for movement of the oil pump. In these cases during operation the belt is partly immersed in an oil bath.
- the belt of the present invention in the main drive for movement of the cams and also for movement of the injection pump in diesel engines.
- the belt according to the invention has been subjected to duration tests with oil. To perform these tests it was used on control systems comprising a driving pulley, a driven pulley and a tensioner in which oil is sprayed directly onto the belt by means of a pipe.
- a resistant layer 8 on the fabric 5 which comprises a fluorinated plastomer and an elastomer and wherein the fluorinated plastomer is present in a greater amount than said first elastomeric material, makes it possible to obtain excellent results and therefore to overcome the problems of prior art toothed belts when used with oil and, in particular, makes it possible to prevent a decrease in the mechanical properties, decreased adhesion, poorer meshing and decreased resistance to wear.
- Table 2 indicates the properties of a fluorinated plastomer usable in a resistant layer 8 .
- Table 3 indicates the properties of an elastomeric material in a resistant layer 8 .
- Table 4 indicates the chemical composition of a resistant layer 8 produced according to the present invention. This resistant layer has a thickness of 0.250 mm.
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Abstract
Toothed belt for use with oil comprising a body and a plurality of teeth extending from at least a surface of the body; the teeth are covered by a coating fabric. The toothed belt comprises a plurality of resistant inserts produced from at least a first and a second material. Preferably, the resistant inserts are constituted by glass fibers and carbon fibers. Preferably, a resistant layer is made to adhere over the coating fabric, said layer comprising a fluorine based plastomer with the addition of an elastomeric material, wherein the plastomer is present in a greater amount than the elastomeric material. The elastomeric material forming the body of the belt is preferably a copolymer obtained from a diene monomer and a monomer containing nitrile groups, wherein the nitrile groups are between 33% and 49%, preferably 39 weight % with respect to the copolymer.
Description
The present invention relates to a toothed belt and, in particular, a toothed belt for use with oil and to the relative timing control system.
Toothed belts generally comprise a body of elastomeric material, embedded in which are a plurality of longitudinal filiform resistant inserts, also called “cords”, and a plurality of teeth covered by a coating fabric.
Each component of the belt contributes towards increasing the performances in terms of mechanical resistance, to decrease the risk of breakage of the belt and increase the specific transmissible power.
The coating fabric of the belts increases the abrasion resistance and hence protects the working surface of the belt from wear which is due to rubbing between the sides and the slopes of the teeth of the belt and the sides and the bottoms of the grooves of the pulley with which the belt interacts. Moreover, the coating fabric decreases the coefficient of friction on the working surface, reduces deformability of the teeth and above all reinforces the root of the tooth, thereby preventing breakage.
The coating fabric used may be constituted by a single layer or, alternatively, may be a double layer to guarantee increased toughness and rigidity. The coating fabric is normally treated with an adhesive, for example RFL (resorcinol-formaldehyde latex) to increase adherence between the body and the fabric.
Currently, many drive systems use gears or chains rather than toothed belts. However, both gears and chains are complex systems to produce. Moreover, both chains and gears produce more noise and function exclusively with oil lubrication. Furthermore, during operation the chains are subject to increased elongation and therefore replacement with a belt would allow greater precision of the drive.
In addition to these main disadvantages, both the control system with chains and the one with gears are very costly.
For these reasons it would therefore be desirable to be able to replace the chains and gears with toothed belts without having to make any adjustments to the drive system as a whole and therefore in these cases the toothed belt would necessarily have to function with oil or even partly immersed in oil.
Numerous studies have been carried out on toothed belts to verify whether they are capable of operating in direct contact with oil. For example, the U.S. Pat. No. 4,099,422 relates to a toothed belt suitable for use in oil bath and comprising a body in elastomeric material, preferably epichlorohydrin, and a double fabric coating the teeth.
The patent application EP0549401 relates to a toothed belt comprising a body formed of a first layer made of CSM or ACSM and a second layer on the side of the teeth formed of an HNBR matrix covered by a fabric treated with HNBR.
However, none of the prior art toothed belts have a high resistance to wear and generally operation in direct contact with oil facilitates breakage of the belt which therefore has a reduced average life.
Therefore, no toothed belt to be used with oil or partly immersed in oil is capable of withstanding the duration tests established for use in vehicle drive systems.
Replacement of chains and gears in existing systems and, therefore, with the overall dimensions already defined, would make it preferable to use toothed belts having a narrower width with respect to the width of the belts normally used in systems not in direct contact with oil.
Due to the limited extension in width of the belt to be used, it would be more probable for malfunction caused by the overall decrease in modulus, for example poor meshing, to occur.
A possible solution could be the use of a material with a much higher modulus than the one used in the toothed belts currently on the market, to form the resistant inserts of the belts, which define the modulus of the belts almost entirely. For example, resistant inserts made entirely of carbon fibre could be used.
However, this alternative solution causes problems of adhesion between the material forming the resistant insert and the mixture of the body and, moreover, materials with a high modulus generally have a much higher cost than the glass resistant inserts currently used.
The object of the present invention is therefore to obtain a toothed belt which can be used with oil or even partly immersed in oil without decrease in the performances of said belt and maintaining the necessary mechanical properties of adhesion, resistance to wear, precision of meshing and noise emission.
A further object of the present invention is to allow chains and gears to be replaced without variations in the dimensions of the control system and therefore to use toothed belts of limited width.
According to the present invention this object is obtained by a toothed belt as claimed in claim 1.
According to the present invention, a timing control system as claimed in claim 25 is also provided.
For better understanding of the present invention, it is described also with reference to the accompanying figures, wherein:
In FIG. 1 a toothed belt is indicated as a whole with the number 1. The belt 1 comprises a body 2 made of elastomeric material, embedded in which are a plurality of longitudinal filiform resistant inserts 3. The body 2 has a first face provided with toothing 4, which is covered in a coating fabric 5, and a second side or back 6 of the belt. Preferably, the back 6 is also covered in a fabric 7.
Even more preferably, the fabric 5 which coats the toothing 4 is the same as the fabric 7 which coats the back 6.
Preferably, the body 2 comprises as main elastomer, that is, present for more than 50 weight % with respect to the other elastomers used in the mixture, a copolymer formed from a monomer containing nitrile groups and from a diene.
More preferably the copolymer used is hydrogenated acrylonitrile butadiene.
Preferably, the copolymer used is obtained from monomers containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
Even more preferably, the copolymer used is obtained from monomers containing nitrile groups in a percentage of 39 weight % with respect to the final copolymer, for example it is possible to use a mixture constituted by 50% of THERBAN 3446 (Bayer registered trademark) and by 50% of THERBAN 4307 (Bayer registered trademark).
Advantageously the mixture of elastomeric material also comprises fibres, preferably in a weight percentage between 0.5% and 15% with respect to the elastomeric material and preferably having a length between 0.1 and 10 mm.
The use of fibres allows adequate mechanical properties of the body mixture to be maintained.
The mixture of elastomeric material may contain, in addition to the main elastomer, also other elastomers, and also conventional additives, such as reinforcing agents, fillers, pigments, stearic acid, accelerators, vulcanizing agents, anti-oxidants, activators, initiators, plasticizers, waxes, pre-vulcanizing inhibitors, and the like.
For example, as filler carbon black or white filler may be used, which may generally be added in amounts between 5 and 200 phr, preferably approximately 70 phr. Talcum, calcium carbonate, silica and the like may also be added in an amount generally between 5 and 150 phr, or dispersions in oil containing fillers. Organosilanes may be used in amounts between 0.1 and 20 phr. Sulfur-donor vulcanizing agents may be used, such as amino disulfides and polymeric polysulfides, free sulfur, or organic or non-organic peroxides. The amount added varies according to the type of rubber and the type of vulcanizing agent used, and is generally between 0.1 and 10 phr. Among the anti-degrading agents most widely used in the composition of the mixture are microcrystalline waxes, paraffin waxes, monophenols, bisphenols, thiophenols, polyphenols, derivatives of hydroquinone, phosphites, mixtures of phosphates, thioesters, naphtylamines, diphenol amines, derivatives of substituted or non-substituted diaryl amines, diaryl-phenylenediamines, para-phenylenediamines, quinolines, and amine mixtures. The anti-degrading agents are generally used in an amount between 0.1 and 10 phr. Examples of process oils that may be used are dithiobis-benzanilide, poly para-dinitrosobenzene, xylyl mercaptans, polyethylene glycol, petroleum oils, vulcanized vegetable oils, phenol resins, synthetic oils, petroleum resins, and polymeric esters. The process oils may be used in a conventional amount between 0 and 140 phr. Amongst the initiators, stearic acid is conventionally used in an amount between 1 and 4 phr. Conventional additives may moreover be added, such as calcium oxide, zinc oxide, and magnesium oxide, generally in an amount between 0.1 and 25 phr. Conventional accelerators or combinations of accelerators are also used, such as amines, disulfides, guanidine, thiourea, thioazoles, thiols, sulphenamides, dithiocarbamates, and xanthates, generally in an amount between 0.1 and 100 phr.
The fabric 5 coating the toothing 4 or the fabric 7 coating the back 6 can be constituted by one or more layers and can, for example, be obtained by means of the weaving technique known as 2×2 twill.
The fabrics 5, 7 are preferably constituted by a polymeric material, preferably aliphatic or aromatic polyamide, even more preferably by high thermal resistance and high tenacity polyamide 6/6.
The fabrics 5, 7 can advantageously be of the type wherein each weft thread is constituted by an elastic thread as core and by at least one composite thread wound on the elastic thread, where the composite thread comprises a thread with high thermal and mechanical resistance and at least one coating thread wound on the thread with high thermal and mechanical resistance.
A toothed belt 1 according to the present invention comprises a resistant layer 8 disposed externally to the fabric 5. Preferably, an adhesive 9 is also interposed between the fabric 5 and the resistant layer 8.
The resistant layer 8 is constituted by a fluorinated plastomer with the addition of an elastomeric material, the fluorinated plastomer being present in an amount greater in weight with respect to the elastomeric material.
An example of resistant layer usable is for example described in the patent EP1157813 to the same applicant.
According to the present invention, the fluorinated plastomer is preferably a compound based on polytetrafluoroethylene. Preferably, the elastomeric material with which the fluorinated plastomer is mixed to form the resistant layer 8 is HNBR, even more preferably HNBR modified with a zinc salt of polymethacrylic acid, for example ZEOFORTE ZSC (Nippon Zeon registered trademark).
Preferably, to ensure the necessary resistance the resistant layer 8 has a weight between 150 and 400 g/m2, equivalent to a average thickness between 0.050 and 1 mm.
Preferably, the fluorinated plastomer is present in amounts between 101 and 150 in weight per 100 parts of elastomeric material.
The resistant layer 8 also comprises a peroxide as vulcanizing agent. The peroxide is normally added in amounts between 1 and 15 parts in weight with respect to 100 parts of elastomeric material.
The use as mixture constituting the body of the belt of an elastomeric material based on a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer, in combination with the use of a resistant layer 8 over the layer of fabric 5 coating the toothing 4 produced as described above, makes it possible to prevent a decrease in the mechanical properties, decreased adhesion, poorer meshing and decreased resistance to wear.
Preferably, the resistant layer 8 is also disposed over the fabric 7 coating the back 6, when said fabric 7 is present. In this case the resistant layer 8 makes it possible to prevent oil from penetrating also on the side of the back 6 of the toothed belt 1 and is particularly advantageous when the toothed belt 1 is used in control systems wherein the back 6 of the belt is with pads or tensioners. In fact, in these systems, the oil remains interposed between the contact surface of the pad or tensioner with the belt and the back of said belt and therefore penetration inside the mixture forming the body would be encouraged.
Preferably the toothed belt 1 can be treated on all the external surfaces and, in particular, on the sides 10 where the body mixture is more exposed to the attack of oil, with a rubber resistant to swelling, for example ENDURLAST (Lord registered trademark).
According to the present invention, the resistant inserts 3 are of the “hybrid” type, that is, they are produced in at least a first and a second material.
In fact, it has surprisingly been discovered that by using resistant inserts 3 formed of two different materials to produce toothed belts operating with oil, it is possible to solve the drawbacks of prior art belts described above. In particular, it has been found that in this way it is possible to produce narrower toothed belts, which can be used in a timing control system without any dimensional variations being made.
Moreover, the use of resistant inserts 3 produced in two different materials allows greater adhesion of the resistant insert 3 to the mixture constituting the body of the belt 1 and reduces the decline in tensile strength in fatigue tests when oil is present.
The resistant inserts 3 are preferably treated with a resorcinol-formaldehyde latex based composition, known as RFL, and in particular with an RFL composition suitable to prevent oil absorption. Preferably, the RFL used comprises a latex formed from a monomer containing nitrile groups and from a diene, for example HNBR or hydrogenated butadiene acrylonitrile. Even more preferably, the latex is obtained from monomers containing nitrile groups in a weight percentage with respect to the final copolymer similar to the preferred elastomeric material used to form the body of the toothed belt 1 described previously.
Therefore, the latex is preferably based on a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer, even more preferably based on a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight % with respect to the final copolymer.
It has been found experimentally that the use of resistant inserts 3 produced in several materials, when treated with an RFL comprising a material suitable to resist oil, contributes towards overcoming the problems at the basis of the present invention.
Both the first and the second material used to produce the resistant inserts 3 according to the present invention are preferably chosen in the group constituted by glass fibres, aramid fibres, polyester fibres, carbon fibres and PBO fibres. The first material preferably has a lower modulus than the second material and is preferably wound around the second material. The first material is therefore chosen to solve problems of compatibility with the mixture of the surrounding body and the second material is therefore chosen to obtain a higher modulus in the toothed belt.
Preferably, in section the second material occupies a surface between 15 and 75% with respect to the total surface of the section. Even more preferably, the second material occupies a surface between 45 and 55% with respect to the total surface. The first material is preferably glass fibre, the second material is preferably carbon fibre. Even more preferably, the glass fibres are high modulus fibres.
Preferably, the glass fibres are wound around the carbon fibres to cover the carbon fibres externally at least partially and even more preferably to cover the carbon fibres entirely.
Preferably the inserts according to the present invention have a twist of the “Lang's twist” type, that is, they have two twists in the same direction, as this construction has proven to be particularly effective.
It is possible to vary the number of fins forming a resistant insert, just as the number of base filaments, the titre or the entire construction of the insert without departing from the present invention.
The toothed belt 1 is vulcanized according to common and known methods which are consequently not described in detail.
A purely indicative example of a resistant insert 3 produced according to the present invention is described below and shown in FIG. 5 , where the number 50 indicates 9 twisted yarns in a first material which entirely surround 1 twisted yarn, indicated with the number 51 and produced in a second material. The first material is glass fibre, the second material is carbon fibre. The glass fibres are wound around the carbon fibres to cover the carbon fibres entirely.
To form this resistant insert 3 glass fins are treated with a treatment based on an adhesive composition, for example RFL, and then twisted a first time to form a twisted yarn. Subsequently, a certain number of these twisted yarns are wound around a carbon fibre twisted yarn. FIG. 5 exemplifies the case in which the twisted yarns are 9.
In this way the twisted yarns form an insert with dimensions between 0.7 and 1.4 mm, in particular 1.15 mm if the construction is 34 tex 3*9, 400 tex*1.
The first torsion to which the fins are subjected to form the twisted yarns consists in a number of torsions equal to 80 in a first direction S (clockwise).
The second torsions to which the twisted yarns are subjected in winding around the carbon are again 80 and are performed in the same direction S to form resistant inserts “S”.
These resistant inserts therefore have a twist of the Lang's twist type, that is, they have two twists in the same direction.
The torsions to which the carbon fibre fins are subjected to form a twisted yarn are 40 and these are also in the same first direction S.
By means of the same procedure and with the same construction resistant inserts 3 are also formed which are twisted both times in a direction opposite to the first direction, that is, in the direction Z (counter-clockwise) to form resistant inserts “Z”.
To form a toothed belt according to the present invention, the resistant inserts S and Z are then simultaneously deposited on the mould with a spiralling pitch between, for example, 2.6 and 3.2 mm and preferably 2.9.
In general, prior art toothed belts have resistant inserts made of high modulus glass which have modulus values at the most of 28 N/mm, where the modulus is defined as the force required to elongate by one millimeter a belt having a length of 1000 mm and a width of one millimeter.
Advantageously, a belt comprising resistant inserts 3 according to the present invention has modulus values of over 28 N/mm, even more preferably between 28 and 50 N/mm; for example, with the construction of the resistant insert previously described a modulus value of 42 N/mm was obtained for the toothed belt.
The belt 1 according to the present invention can be used, for example, in a timing control system for a motor vehicle of the type shown in FIG. 2 . The timing control system is indicated in the figure as a whole with the number 11 and comprises a driving pulley 12 fixed rigidly to the drive shaft, not shown, a first 13 a and a second 13 b driven pulley and a tensioner 14 to tension the toothed belt.
According to a second alternative embodiment, shown in FIG. 3 , a toothed belt according to the invention is indicated with the number 20, with a toothing on both faces and therefore having a resistant fabric that covers both toothings.
A toothed belt 20 can, for example, be used in a timing control system for a motor vehicle of the type shown in FIG. 3 . The timing control system is indicated in the figure as a whole with the number 21 and comprises a driving pulley 22, fixed rigidly to the drive shaft, not shown, a first 23 a, a second 23 b and a third 24 driven pulley.
According to a third embodiment of the present invention, shown in FIG. 4 , a toothed belt 30 according to the present invention can advantageously be used in a timing control system indicated in the figure as a whole with the number 31, which comprises a driving pulley 32, fixed rigidly to the drive shaft, not shown, a first 33 a and a second 33 b driven pulley, a pad tensioner 34 and a pad 35.
In use, the toothed belts 1, 20 and 30 in the respective control systems 11, 21 and 31 are in direct contact with oil. FIGS. 2 to 4 refer to control systems relative to movement of the balancing countershafts, but it is clear that the toothed belt according to the present invention may also be used in “cam to cam” systems or for movement of the oil pump. In these cases during operation the belt is partly immersed in an oil bath.
Moreover, it is also possible to use the belt of the present invention in the main drive for movement of the cams and also for movement of the injection pump in diesel engines.
In particular, the belt according to the invention has been subjected to duration tests with oil. To perform these tests it was used on control systems comprising a driving pulley, a driven pulley and a tensioner in which oil is sprayed directly onto the belt by means of a pipe.
The conditions in which the test was performed are indicated in Table 1.
TABLE 1 | |||
Belt type | Dayco 122RPP+150 |
Speed | 6000 | rpm | ||
Specific load | 40 | N/mm | ||
Oil temperature | 140° | C. | ||
Oil quantity | 22 | l/h | ||
Number of |
22 | |||
Number of teeth driven pulley | 44 | |||
Tensioner diameter | 47 | mm | ||
The toothed belts tested and formed according to the example previously described resisted in these conditions for at least 80,000,000 cycles.
In particular, using a resistant insert according to the present invention rather than a resistant insert having the same construction, but made entirely of glass, considerable improvements were obtained in terms of decline in tensile strength, as shown in FIG. 6 . The graph in FIG. 6 in fact indicates a reduced decline for the entire lifespan of the toothed belt, in the case in which a resistant insert according to the present invention was used.
By examining the properties of the toothed belt 1 produced according to the present invention, the advantages made possible by its use are evident.
In particular, the use of resistant inserts in a belt for use with oil makes it possible to produce narrower belts which are able to function in direct contact with oil and therefore to replace chains and gears without varying the dimensions of the control system.
Moreover, it has been verified experimentally that the combination of the use of resistant inserts produced in two different materials in combination with the use of a resistant layer 8 on the fabric 5, which comprises a fluorinated plastomer and an elastomer and wherein the fluorinated plastomer is present in a greater amount than said first elastomeric material, makes it possible to obtain excellent results and therefore to overcome the problems of prior art toothed belts when used with oil and, in particular, makes it possible to prevent a decrease in the mechanical properties, decreased adhesion, poorer meshing and decreased resistance to wear.
The toothed belt according to the present invention shall now be described also by means of examples without however limitation to these examples.
Table 2 indicates the properties of a fluorinated plastomer usable in a resistant layer 8.
TABLE 2 |
ZONYL MP 1500 |
Average density ASTM D 1457 | 350-400 | g/l | ||
Melting point ASTM D 1457 | 325 ± 10° | C. | ||
Distribution of particle size | Average 6 | μm | ||
(Laser Microtac) | ||||
Specific surface area ( |
11 | |||
absorption) | ||||
Table 3 indicates the properties of an elastomeric material in a resistant layer 8.
TABLE 3 |
ZETPOL 1010 |
Bound acrylonitrile weight % | 44% | ||
|
78-92 | ||
Specific gravity | 0.98 (g/cm3) | ||
Table 4 indicates the chemical composition of a resistant layer 8 produced according to the present invention. This resistant layer has a thickness of 0.250 mm.
TABLE 4 | |||
Elastomeric material as in example 2 | 100 phr | ||
Fluoropolymer-based additive as in Example 1 | 125 | ||
Peroxide | |||
6 phr | |||
Claims (76)
1. A method of providing a toothed belt for use in oil, the method comprising:
providing a toothed belt adapted for use in substantially continuous contact with oil or partially immersed in oil, said belt comprising
a body,
a plurality of teeth extending from at least a first surface of said body, said teeth being coated by a first fabric, said first fabric is externally coated by a first resistant layer, which comprises a fluorinated plastomer, a first elastomeric material, and a vulcanizing agent; and in that said fluorinated plastomer is present in said first resistant layer in an amount greater than said first elastomeric material, and
a plurality of resistant inserts;
wherein said resistant inserts comprise twisted yarns produced from fibers of at least a first and a second material and said first fibrous material entirely surrounds said second fibrous material;
said first and second materials are chosen from the group consisting of glass fibers, aramid fibers, polyester fibers, PBO fibers, and carbon fibers;
wherein the twisted yarns form an insert of said resistant inserts with dimensions between 0.7 and 1.4 mm,
said body comprising as main elastomeric material a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight percent with respect to the final copolymer.
2. The method of claim 1 , wherein said first material has a lower modulus with respect to said second material.
3. The method of claim 1 , wherein, in section, said second material occupies a sectional surface between about 15% and about 75% of a total sectional surface of the body.
4. The method of claim 3 , wherein, in section, said second material occupies a sectional surface between about 35% and 45% of a total sectional surface of the body.
5. The method of claim 1 , characterized in that said resistant inserts include two twists in the same direction.
6. The method of claim 1 , wherein said resistant inserts have been treated with an RFL comprising an oil resistant latex.
7. The method of claim 6 , wherein said latex comprises an elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
8. The method of claim 7 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
9. The method of claim 8 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight %.
10. The method of claim 1 , wherein said body comprises a mixture based on a second elastomeric material fanned from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
11. The method of claim 1 , wherein said first resistant layer comprises said fluorinated plastomer in an amount in weight between 101 and 150 parts in weight with respect to said first elastomeric material.
12. The method of claim 1 , wherein said fluorinated elastomer is polytetrafluoroethylene.
13. The method of claim 1 , wherein a back of said belt is covered by a second fabric.
14. The method of claim 13 , wherein said second fabric is externally coated by a second resistant layer.
15. The method of claim 14 , wherein said second resistant layer is formed the same as said first resistant layer.
16. The method of claim 1 , wherein said first elastomeric material comprises fibers.
17. The method of claim 16 , wherein said fibers are present in an amount in weight between 0.5 and 15% with respect to said first elastomeric material.
18. The method of claim 1 , wherein said toothed belt comprises, between the toothing and a back surface of said belt, sides treated with a polymer resistant to swelling.
19. Timing control system for a motor vehicle comprising at least one driving pulley, one driven pulley, a toothed belt adapted for use substantially continuous contact with oil or partly immersed in oil, and materials for maintaining said toothed belt in an oil-wet condition; said toothed belt comprising a body, and one or more teeth extending from at least a first surface of said body, said teeth being covered by a first fabric, said first fabric is externally coated by a first resistant layer, which comprises a fluorinated plastomer, a first elastomeric material, and a vulcanizing agent; and in that said fluorinated plastomer is present in said first resistant layer in an amount greater than said first elastomeric material, and a plurality of resistant inserts, wherein said resistant inserts comprise twisted yarns produced from fibers of at least a first and a second material and said first fibrous material entirely surrounds said second fibrous material; said first and second materials are chosen from the group consisting of glass fibers, aramid fibers, polyester fibers, PBO fibers, and carbon fibers; wherein the twisted yarns form an insert of said resistant inserts with dimensions between 0.7 and 1.4 mm,
said body comprising as main elastomeric material a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight percent with respect to the final copolymer.
20. Control system as claimed in claim 19 , wherein said first material has a lower modulus with respect to said second material.
21. Control system as claimed in claim 19 , wherein, in cross-section, said second material occupies a surface between about 15% and about 75% of a total sectional surface of the body.
22. Control system as claimed in claim 21 , wherein, in cross-section, said second material occupies a surface between about 35% and 45% of a total sectional surface of the body.
23. Control system as claimed in claim 19 , wherein said resistant inserts include two twists in the same direction.
24. Control system as claimed in claim 19 , wherein said resistant inserts have been treated with an RFL comprising an oil resistant latex.
25. Control system as claimed in claim 24 , wherein said latex comprises an elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
26. Control system as claimed in claim 25 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
27. Control system as claimed in claim 26 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight %.
28. Control system as claimed in claim 19 , wherein said body comprises a mixture based on a second elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
29. Control system as claimed in claim 19 , wherein said first resistant layer comprises said fluorinated plastomer in an amount in weight between 101 and 150 parts in weight with respect to said first elastomeric material.
30. Control system as claimed in claim 19 , wherein said fluorinated plastomer is polytetrafluoroethylene.
31. Control system as claimed in claim 19 , wherein a back of said belt is covered by a second fabric.
32. Control system as claimed in claim 31 , wherein said second fabric is externally coated by a second resistant layer.
33. Control system as claimed in claim 32 , wherein said second resistant layer is formed the same as said first resistant layer.
34. Control system as claimed in claim 19 , wherein said first elastomeric material comprises fibers.
35. Control system as claimed in claim 34 , wherein said fibers are present in an amount in weight between 0.5 and 15% with respect to said first elastomeric material.
36. Control system as claimed in claim 19 , wherein said toothed belt comprises, between the toothing and a back surface of said belt, sides treated with a polymer resistant to swelling.
37. Control system as claimed in claim 36 , wherein the control system comprises a pad tensioner pad.
38. A toothed belt, adapted for use in substantially continuous contact with oil or partly immersed in oil, the belt comprising a body, a plurality of teeth extending from at least a first surface of said body, said teeth being coated by a first fabric, said first fabric is externally coated by a first resistant layer, which comprises a fluorinated plastomer, a first elastomeric material, and a vulcanizing agent; and in that said fluorinated plastomer is present in said first resistant layer in an amount greater than said first elastomeric material, and a plurality of resistant inserts, wherein said resistant inserts comprise twisted yarns produced from fibers of at least a first and a second material and said first fibrous material entirely surrounds said second fibrous material; said first and second materials are chosen from the group consisting of glass fibers, aramid fibers, polyester fibers, PBO fibers, and carbon fibers;
wherein the twisted yarns form an insert of said resistant inserts with dimensions between 0.7 and 1.4 mm said body comprising as main elastomeric material a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight percent with respect to the final copolymer.
39. The toothed belt as claimed in claim 38 , wherein said first material has a lower modulus with respect to said second material.
40. The toothed belt as claimed in claim 38 , wherein, in section, said second material occupies a sectional surface between about 15% and about 75% of a total sectional surface of the body.
41. The toothed belt as claimed in claim 40 , wherein, in section, said second material occupies a sectional surface between about 35% and 45% of a total sectional surface of the body.
42. The toothed belt as claimed in claim 38 , wherein said resistant inserts have two twists in the same direction.
43. The toothed belt as claimed in claim 38 , wherein said resistant inserts have been treated with an RFL comprising an oil resistant latex.
44. The toothed belt as claimed in claim 43 , wherein said latex comprises an elastomeric material formed from a copolymer obtained from a diem monomer and a monomer containing nitrile groups.
45. The toothed belt as claimed in claim 44 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
46. The toothed belt as claimed in claim 45 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight %.
47. The toothed belt as claimed in claim 38 , wherein said body comprises a mixture based on a second elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
48. The toothed belt as claimed in claim 38 , wherein said first resistant layer comprises said fluorinated plastomer in an amount in weight between 101 and 150 parts in weight with respect to said elastomeric material.
49. The toothed belt as claimed claim 38 , wherein said fluorinated plastomer is polytetrafluoroethylene.
50. The toothed belt as claimed in claim 38 , wherein a back of said belt is covered by a second fabric.
51. The toothed belt as claimed in claim 50 , wherein said second fabric externally coated by a second resistant layer.
52. The toothed belt as claimed in claim 51 , wherein said second resistant layer is formed the same as said first resistant layer.
53. The toothed belt as claimed in claim 38 , wherein said first elastomeric material comprises fibres.
54. The toothed belt as claimed in claim 38 , wherein said toothed belt comprises, between the toothing and a back surface of said belt, sides treated with a polymer resistant to swelling.
55. The toothed belt as claimed in claim 38 wherein the toothed belt is configured to replace a chain in a timing control system without any dimensional variations being made to the timing control system.
56. A method of providing a belt for use with oil, the method comprising:
providing an oil-wet environment,
providing a toothed belt to operate in said oil-wet environment, said belt comprising:
a body,
a plurality of teeth extending from at leas a first, surface of said body, said teeth being coated by a first fabric, said fabric, said first fabric is externally coated by a first resistant layer, which comprises a fluorinated plastomer, a first elastomeric material, and a vulcanizing agent; and in that said fluorinated plastomer is present in said first resistant layer in an amount greater than said first elastomeric material, and
a plurality of resistant inserts;
wherein said resistant inserts comprise twisted yarns produced from fibers of at least a first and a second material and said first fibrous material entirely surrounds said second fibrous material;
said first and second materials are chosen from the group consisting of glass fibers, aramid fibers, polyester fibers, PBO fibers, and, carbon fibers;
wherein the twisted yarns form an insert of said resistant inserts with dimensions between 0.7 and 1.4 mm;
said body comprising as main elastomeric material a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight percent with respect to the final copolymer.
57. The method of claim 56 wherein the oil wet environment further comprises an oil spray.
58. The method of claim 56 wherein the oil wet environment further comprises an oil bath.
59. The method of claim 56 wherein the oil-wet environment is provided by an oil transport system configured to deliver oil at approximately 5.8 gallons/hour.
60. The method of claim 56 wherein the oil wet environment provides oil at a temperature of approximately 284° F.
61. The method of claim 56 wherein said first material has a lower modulus with respect to said second material.
62. The method of claim 56 , wherein, in cross-section, said second material occupies a sectional surface between about 15% and about 75% of the total sectional surface of the body.
63. The method of claim 62 , wherein, in cross-section, said second material occupies a sectional surface between about 35% and about 45% of the total sectional surface of the body.
64. The method of claim 56 , characterized in that said resistant inserts include two twists in the same direction.
65. The method of claim 56 , wherein said resistant inserts have been treated with an RFL comprising an oil resistant latex.
66. The method of claim 65 , wherein said latex comprises an elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
67. The method of claim 66 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight % with respect to the final copolymer.
68. The method of claim 67 , wherein said copolymer of said latex is formed from a diene and from a monomer containing nitrile groups in a percentage of 39 weight %.
69. The method of claim 56 , wherein said body comprises a mixture based on a second elastomeric material formed from a copolymer obtained from a diene monomer and a monomer containing nitrile groups.
70. The method of claim 56 , wherein said first resistant layer comprises said fluorinated plastomer in an amount in weight between 101 and 150 parts in weight with respect to said first elastomeric material.
71. The method of claim 56 , wherein said fluorinated plastomer is polytetrafluoroethylene.
72. The method of claim 56 , wherein the back of said belt is covered by a second fabric.
73. The method of claim 72 , wherein said second fabric is externally coated by a second resistant layer.
74. The method of claim 73 , wherein said second resistant layer is formed the same as said first resistant layer.
75. The method of claim 56 , wherein said first elastomeric material comprises fibers.
76. The method of claim 75 , wherein said fibers are present in an amount in weight between 0.5 and 15% with respect to said first elastomeric material.
Applications Claiming Priority (4)
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WOPCT/IT2004/000081 | 2004-02-23 | ||
PCT/IT2004/000533 WO2005080820A1 (en) | 2004-02-23 | 2004-09-29 | Toothed belt for use with oil and relative timing control system |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130337956A1 (en) * | 2012-06-18 | 2013-12-19 | Mitsuboshi Belting Ltd. | Cover fabric for power transmission belt and toothed belt |
US20150005123A1 (en) * | 2012-01-31 | 2015-01-01 | Dayco Europe S.R.L. | Use of a transmission belt in oil and related transmission system |
US20170108079A1 (en) * | 2014-03-31 | 2017-04-20 | Mitsuboshi Belting Ltd. | Toothed Belt |
US10220545B2 (en) | 2016-04-30 | 2019-03-05 | Contitech Antriebssysteme Gmbh | Water based urethane as predip for carbon fiber cord |
WO2019118078A1 (en) | 2017-12-13 | 2019-06-20 | Gates Corporation | Toothed power transmission belt with back fabric |
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US10669127B2 (en) | 2016-12-12 | 2020-06-02 | Otis Elevator Company | Hybrid fabric-laminated belt for elevator system |
US20220243785A1 (en) * | 2019-05-16 | 2022-08-04 | Mitsuboshi Belting Ltd. | Twisted Cord for Core Wire of Transmission Belt, Manufacturing Method and Use of Same, and Transmission Belt |
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US20230141466A1 (en) * | 2020-07-03 | 2023-05-11 | Bando Chemical Industries, Ltd. | Toothed belt |
Families Citing this family (74)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US8932165B2 (en) | 2006-03-31 | 2015-01-13 | The Gates Corporation | Toothed power transmission belt |
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US8326514B2 (en) | 2007-03-27 | 2012-12-04 | Dayco Europe S.R.L. | Drive for an internal combustion engine comprising an oil wet toothed belt and a tensioning shoe |
US8292765B2 (en) | 2007-06-05 | 2012-10-23 | Dayco Europe S.R.L. | Pulley tensioner for an oil wet belt drive |
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WO2009153816A1 (en) * | 2008-06-19 | 2009-12-23 | Dayco Europe S.R.L. | Starter alternator assembly comprising a poli-v belt and poli-v belt |
DE102008033267A1 (en) * | 2008-07-15 | 2010-01-21 | Contitech Antriebssysteme Gmbh | Oil-resistant drive belt, in particular toothed belt |
DE102008038322A1 (en) | 2008-08-19 | 2010-02-25 | Contitech Antriebssysteme Gmbh | Heating sleeve as a component of a vulcanization device, in particular for producing an endlessly closed drive belt |
DE102008045453A1 (en) | 2008-09-02 | 2010-03-04 | Contitech Antriebssysteme Gmbh | Drive belt i.e. high-power ribbed v-belt, for transmitting force, has elastic textile support layers coated on elastic polymer layers so that textile support layers are stably connected with elastic polymer layers |
DE102008037415A1 (en) | 2008-10-06 | 2010-04-08 | Contitech Antriebssysteme Gmbh | Driving belt, particularly V-ribbed belt, comprises cover layer as belt back, and subframe having power transmission zone, where power transmission zone is typically equipped with textile cover |
DE102008037561B4 (en) * | 2008-11-18 | 2020-06-18 | Contitech Antriebssysteme Gmbh | Articles, in particular drive belts, with a textile covering and method for producing a drive belt |
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DE102009003528A1 (en) | 2009-02-24 | 2010-08-26 | Contitech Ag | Vulcanized rubber mixture, useful for manufacturing e.g. tire, conveyor belt, driving belt, tube, suspension bag and gasket, comprises rubber component, fluoroplastic material, which is polytetrafluoroethylene and mixing ingredient |
IT1397575B1 (en) | 2009-03-27 | 2013-01-16 | Dayco Europe Srl | ELASTOMERIC COMPOSITIONS INCLUDING FLUORURED ADDITIVES AND ITS USE FOR THE MANUFACTURE OF TRANSMISSION BELTS |
RU2521449C2 (en) * | 2009-04-06 | 2014-06-27 | Дайко Юроп С.Р.Л. | Toothed belt and usage of toothed belt in oil |
DE102009003763A1 (en) | 2009-04-08 | 2010-10-14 | Contitech Antriebssysteme Gmbh | Drive belt i.e. V-ribbed belt, has base frame and/or force transmission zone equipped with wear-resistant and/or medium-resistant coating, where belt is provided with detectable magnetic marking in belt longitudinal direction |
DE102009025883A1 (en) | 2009-05-28 | 2010-12-02 | Contitech Antriebssysteme Gmbh | Method for coating rubber article e.g. flat belt, involves implementing coating and drying of rubber article with continuous or discontinuous clock frequency in clocked parallel manner or successive manner |
DE102009026167A1 (en) | 2009-07-14 | 2011-01-27 | Contitech Antriebssysteme Gmbh | Method for producing elastic article e.g. tube, involves processing combination material coated surface by mechanical device after vulcanization such that part of fiber material is exposed and fiber film is formed |
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DE102009044153A1 (en) | 2009-10-01 | 2011-04-07 | Contitech Antriebssysteme Gmbh | Drive belts, in particular toothed belts, with basalt tension cord |
US9353827B2 (en) * | 2009-10-13 | 2016-05-31 | Gates Unitta Asia Company | Toothed belt |
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DE102010015901A1 (en) | 2010-03-10 | 2011-09-15 | Contitech Antriebssysteme Gmbh | Drive belt, in particular V-ribbed belt, with a fabric support |
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DE102010060216A1 (en) | 2010-10-28 | 2012-05-03 | Contitech Antriebssysteme Gmbh | Driving belt e.g. high performance poly-V belt has bridging connecting strip arranged between fabric ends of closure and substructure, which is textile sheet whose mesh size is set to make polymeric material of substructure to penetrate |
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DE102011050483A1 (en) | 2011-05-19 | 2012-11-22 | Contitech Antriebssysteme Gmbh | Drive belt with a reinforcing band or a reinforcing braid or with zone-wise arranged reinforcing elements within the substructure |
DE102011054976A1 (en) | 2011-11-02 | 2013-05-02 | Contitech Antriebssysteme Gmbh | Process for the preparation of a tension member, in particular a carbon tension member, in the manufacture of a belt |
DE102011054978A1 (en) | 2011-11-02 | 2013-05-02 | Contitech Antriebssysteme Gmbh | Belt with a tension member, in particular a carbon tensile member prepared with a cross-linked polyurethane, and a preparation method |
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DE102011088778A1 (en) * | 2011-12-16 | 2013-06-20 | Hilti Aktiengesellschaft | driving- |
DE102011121656A1 (en) | 2011-12-20 | 2013-06-20 | Arntz Beteiligungs Gmbh & Co. Kg | Belt with multilayer impregnated textile cover |
DE102012105510A1 (en) | 2012-06-25 | 2014-02-20 | Contitech Antriebssysteme Gmbh | Articles, in particular drive belts, with a textile support |
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DE102012110769A1 (en) | 2012-11-09 | 2014-05-15 | Contitech Antriebssysteme Gmbh | Belt for drive technology, in particular belt-like tension element for elevator technology, with fire-retardant properties |
JP5997712B2 (en) * | 2013-01-30 | 2016-09-28 | 三ツ星ベルト株式会社 | Friction transmission belt |
DE102013104757A1 (en) | 2013-05-08 | 2014-11-13 | Contitech Antriebssysteme Gmbh | Method for producing a belt with prepared tension members with a cover layer |
DE102013104764A1 (en) | 2013-05-08 | 2014-11-13 | Contitech Antriebssysteme Gmbh | Method for producing a PU belt with tension members |
DE102013211917A1 (en) | 2013-06-24 | 2014-12-24 | Schaeffler Technologies Gmbh & Co. Kg | Belt drive of an internal combustion engine |
ITTO20130640A1 (en) | 2013-07-29 | 2015-01-30 | Dayco Europe Srl | TRANSMISSION SYSTEM INCLUDING A WET ORGANIC TOOTHED BELT |
BR112016023389B1 (en) | 2014-04-08 | 2021-09-21 | Dayco Europe S.R.L. | DRIVE BELT |
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DE102014226535A1 (en) * | 2014-12-19 | 2016-06-23 | Contitech Antriebssysteme Gmbh | Drive belts, in particular toothed belts |
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US10514083B2 (en) * | 2016-08-16 | 2019-12-24 | Contitech Antriebssysteme Gmbh | Cross-linked elastomeric low friction faced synchronous power transmission belt |
EP3330294B1 (en) | 2016-12-05 | 2020-08-26 | Dayco Europe S.R.L. | Power transmission belt |
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DE102017219339A1 (en) | 2017-10-27 | 2019-05-02 | Contitech Antriebssysteme Gmbh | Article with multiple alternately plated textile cover |
DE102017223383A1 (en) | 2017-12-20 | 2019-06-27 | Contitech Antriebssysteme Gmbh | Drive belt with textile support |
CN111247316B (en) | 2018-07-05 | 2022-02-01 | 盖茨公司 | Synchronous belt driving system |
DE102019212077A1 (en) | 2019-08-13 | 2021-02-18 | Contitech Antriebssysteme Gmbh | Timing belt for use in an oil environment |
CN115461558B (en) * | 2020-07-03 | 2023-03-28 | 阪东化学株式会社 | Transmission belt |
DE102021204092A1 (en) | 2021-04-23 | 2022-10-27 | Contitech Antriebssysteme Gmbh | heating sleeve |
CN117561385A (en) | 2021-05-24 | 2024-02-13 | 戴科欧洲有限公司 | Transmission belt |
DE102022204786A1 (en) | 2022-05-16 | 2023-11-16 | Contitech Antriebssysteme Gmbh | Power transmission belts with filaments to determine safe service life |
DE102022210531A1 (en) | 2022-10-05 | 2024-04-11 | Contitech Antriebssysteme Gmbh | FIRE-RETARDANT LIFTING AGENTS WITH ANTISTATIC PROPERTIES |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4099422A (en) * | 1975-12-05 | 1978-07-11 | Industrie Pirelli S.P.A. | Oil resistant toothed belt |
US4498891A (en) * | 1982-02-05 | 1985-02-12 | Mitsuboshi Belting Ltd. | Drive belt with tensile cords |
JPH02248741A (en) * | 1989-03-22 | 1990-10-04 | Bando Chem Ind Ltd | Toothed belt |
EP0549401A1 (en) | 1991-12-26 | 1993-06-30 | Caoutchouc Manufacture Et Plastiques | Toothed belt made oil and heat resistant by association of elastomers |
US5306213A (en) * | 1991-05-17 | 1994-04-26 | Mitsuboshi Belting Ltd. | Toothed belt |
US5967922A (en) | 1995-09-30 | 1999-10-19 | Ina Walzlager Schaeffler Ohg | Tensioning device for a control gear |
WO2001018291A1 (en) | 1999-09-08 | 2001-03-15 | Alliedsignal Inc. | Hybrid cabled cord and a method to make it |
EP1157813A1 (en) | 2000-05-23 | 2001-11-28 | DAYCO EUROPE S.r.l. | Toothed belt |
US6419775B1 (en) | 1999-04-21 | 2002-07-16 | The Gates Corporation | Process for manufacturing wear resistant belts |
US20020098935A1 (en) * | 2001-01-20 | 2002-07-25 | Danhauer Loren Elza | Fabric cushion v-ribbed belt |
US20020142147A1 (en) | 2001-01-25 | 2002-10-03 | Unitta Company | Transmission belt and method of treatment for bonding with poly-p-phenylene benzobisoxazole fiber |
WO2002084144A1 (en) | 2001-04-12 | 2002-10-24 | The Gates Corporation | Thermoplastic jacket belt |
WO2003023254A2 (en) | 2001-09-10 | 2003-03-20 | Arntz Beteiligungs Gmbh & Co. Kg | Toothed belt |
CA2474651A1 (en) | 2002-03-22 | 2003-10-02 | Nippon Sheet Glass Co., Ltd. | Hybrid cord for reinforcing rubber and rubber product |
US20040033857A1 (en) * | 2002-08-13 | 2004-02-19 | Susan Welk | Belt |
US20040127316A1 (en) * | 2002-12-27 | 2004-07-01 | Hiroshi Hashimoto | Chain tension-imparting device |
US6945891B2 (en) * | 2001-01-12 | 2005-09-20 | The Gates Corporation | Power transmission belt and method |
US7056249B1 (en) * | 1999-05-14 | 2006-06-06 | Mitsuboshi Belting Ltd. | Power transmission belt and method of manufacturing the power transmission belt |
US20070240658A1 (en) | 2004-02-23 | 2007-10-18 | Carlo Baldovino | Toothed Belt |
US7396884B2 (en) * | 2003-02-20 | 2008-07-08 | Lanxess Deutschland Gmbh | Hydrogenated nitrile butadiene rubber |
US7682274B2 (en) * | 2003-04-09 | 2010-03-23 | Nippon Sheet Glass Company, Limited | Reinforcing cord for rubber reinforcement and rubber product including the same |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2585583A (en) * | 1949-08-01 | 1952-02-12 | Du Pont | Hydrogenated butadiene-acrylonitrile copolymer |
US4009422A (en) * | 1975-07-21 | 1977-02-22 | Buckbee-Mears Company | Lightning arrester construction |
JP3009427B2 (en) * | 1990-06-13 | 2000-02-14 | ユニッタ株式会社 | Toothed belt |
US5387160A (en) * | 1992-02-10 | 1995-02-07 | Mitsuboshi Belting Ltd. | Heat resistant rubber compositions and belts made therefrom |
JPH08233037A (en) * | 1994-12-28 | 1996-09-10 | Mitsuboshi Belting Ltd | Toothed belt for carriage |
ATE260425T1 (en) * | 1998-11-19 | 2004-03-15 | Gates Corp | DRIVE BELT |
US6352488B1 (en) * | 1999-03-05 | 2002-03-05 | The Goodyear Tire & Rubber Company | Power transmission belt |
US6672983B2 (en) | 2000-12-21 | 2004-01-06 | The Goodyear Tire & Rubber Company | Power transmission drive system |
JP2002340098A (en) | 2001-05-21 | 2002-11-27 | Mitsuboshi Belting Ltd | Toothed belt |
-
2004
- 2004-02-23 BR BRPI0418562-5A patent/BRPI0418562B1/en active IP Right Grant
- 2004-02-23 DE DE602004013050T patent/DE602004013050T2/en not_active Expired - Lifetime
- 2004-02-23 ES ES04713631T patent/ES2303055T3/en not_active Expired - Lifetime
- 2004-02-23 CA CA2556750A patent/CA2556750C/en not_active Expired - Lifetime
- 2004-02-23 US US10/590,224 patent/US7749118B2/en active Active
- 2004-02-23 KR KR1020067019494A patent/KR101098013B1/en active IP Right Grant
- 2004-02-23 WO PCT/IT2004/000081 patent/WO2005080821A1/en active IP Right Grant
- 2004-02-23 EP EP04713631A patent/EP1735543B1/en not_active Expired - Lifetime
- 2004-02-23 AT AT04713631T patent/ATE391864T1/en not_active IP Right Cessation
- 2004-02-23 CN CN2004800425913A patent/CN1930405B/en not_active Expired - Lifetime
- 2004-09-29 BR BRPI0418561-7A patent/BRPI0418561A/en not_active Application Discontinuation
- 2004-09-29 US US10/590,227 patent/US8568260B2/en active Active
- 2004-09-29 KR KR1020067019495A patent/KR101235121B1/en active IP Right Grant
- 2004-09-29 CA CA2556751A patent/CA2556751C/en active Active
- 2004-09-29 WO PCT/IT2004/000533 patent/WO2005080820A1/en active Application Filing
- 2004-09-29 CN CN2004800425909A patent/CN1934371B/en active Active
- 2004-09-29 EP EP04787615A patent/EP1723348B1/en not_active Revoked
-
2010
- 2010-06-04 US US12/794,234 patent/US8388477B2/en not_active Expired - Lifetime
Patent Citations (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4099422A (en) * | 1975-12-05 | 1978-07-11 | Industrie Pirelli S.P.A. | Oil resistant toothed belt |
US4498891A (en) * | 1982-02-05 | 1985-02-12 | Mitsuboshi Belting Ltd. | Drive belt with tensile cords |
JPH02248741A (en) * | 1989-03-22 | 1990-10-04 | Bando Chem Ind Ltd | Toothed belt |
US5306213A (en) * | 1991-05-17 | 1994-04-26 | Mitsuboshi Belting Ltd. | Toothed belt |
EP0549401A1 (en) | 1991-12-26 | 1993-06-30 | Caoutchouc Manufacture Et Plastiques | Toothed belt made oil and heat resistant by association of elastomers |
US5967922A (en) | 1995-09-30 | 1999-10-19 | Ina Walzlager Schaeffler Ohg | Tensioning device for a control gear |
US6419775B1 (en) | 1999-04-21 | 2002-07-16 | The Gates Corporation | Process for manufacturing wear resistant belts |
US7056249B1 (en) * | 1999-05-14 | 2006-06-06 | Mitsuboshi Belting Ltd. | Power transmission belt and method of manufacturing the power transmission belt |
WO2001018291A1 (en) | 1999-09-08 | 2001-03-15 | Alliedsignal Inc. | Hybrid cabled cord and a method to make it |
EP1157813A1 (en) | 2000-05-23 | 2001-11-28 | DAYCO EUROPE S.r.l. | Toothed belt |
US20020015825A1 (en) | 2000-05-23 | 2002-02-07 | Meco Marco Di | Toothed belt |
US6945891B2 (en) * | 2001-01-12 | 2005-09-20 | The Gates Corporation | Power transmission belt and method |
US20020098935A1 (en) * | 2001-01-20 | 2002-07-25 | Danhauer Loren Elza | Fabric cushion v-ribbed belt |
US20020142147A1 (en) | 2001-01-25 | 2002-10-03 | Unitta Company | Transmission belt and method of treatment for bonding with poly-p-phenylene benzobisoxazole fiber |
WO2002084144A1 (en) | 2001-04-12 | 2002-10-24 | The Gates Corporation | Thermoplastic jacket belt |
WO2003023254A2 (en) | 2001-09-10 | 2003-03-20 | Arntz Beteiligungs Gmbh & Co. Kg | Toothed belt |
CA2474651A1 (en) | 2002-03-22 | 2003-10-02 | Nippon Sheet Glass Co., Ltd. | Hybrid cord for reinforcing rubber and rubber product |
US20040226641A1 (en) * | 2002-03-22 | 2004-11-18 | Nippon Sheet Glass Co., Ltd. | Hybrid cord for rubber reinforcement and rubber product employing the same |
US20040033857A1 (en) * | 2002-08-13 | 2004-02-19 | Susan Welk | Belt |
US20040127316A1 (en) * | 2002-12-27 | 2004-07-01 | Hiroshi Hashimoto | Chain tension-imparting device |
US7396884B2 (en) * | 2003-02-20 | 2008-07-08 | Lanxess Deutschland Gmbh | Hydrogenated nitrile butadiene rubber |
US7682274B2 (en) * | 2003-04-09 | 2010-03-23 | Nippon Sheet Glass Company, Limited | Reinforcing cord for rubber reinforcement and rubber product including the same |
US20070240658A1 (en) | 2004-02-23 | 2007-10-18 | Carlo Baldovino | Toothed Belt |
Non-Patent Citations (4)
Title |
---|
Anonymous, "Acrobat Reader Document properties Summary Screenshot", XP-002301510, published on Oct. 19, 2004. |
Bayer, "Therban-Comparative Properties", XP-002301499, published on Nov. 23, 2003; http:/www.therban.com/intertherban/c1multimedia-en.nsf/SysAllByCMSInternalKey/CHAR-5E3CG9/$File/compa-prop.pdf?OpenElement, retrieved on Oct. 19, 2004. |
Bayer, "Therban—Comparative Properties", XP-002301499, published on Nov. 23, 2003; http:/www.therban.com/intertherban/c1multimedia—en.nsf/SysAllByCMSInternalKey/CHAR-5E3CG9/$File/compa—prop.pdf?OpenElement, retrieved on Oct. 19, 2004. |
Therban Hydrogenated Nitirle Rubber (HNBR) for High Quality Heat and Oil Resistant Seals and Gaskets Technical Information Bulletin, 2000 Bayer Corporation. * |
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US20220243785A1 (en) * | 2019-05-16 | 2022-08-04 | Mitsuboshi Belting Ltd. | Twisted Cord for Core Wire of Transmission Belt, Manufacturing Method and Use of Same, and Transmission Belt |
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US11933383B2 (en) * | 2019-05-16 | 2024-03-19 | Mitsuboshi Belting Ltd. | Twisted cord for core wire of transmission belt, manufacturing method and use of same, and transmission belt |
US20230141466A1 (en) * | 2020-07-03 | 2023-05-11 | Bando Chemical Industries, Ltd. | Toothed belt |
US11719309B2 (en) * | 2020-07-03 | 2023-08-08 | Bando Chemical Industries, Ltd. | Toothed belt |
Also Published As
Publication number | Publication date |
---|---|
WO2005080821A8 (en) | 2005-12-01 |
CN1934371A (en) | 2007-03-21 |
US20070240658A1 (en) | 2007-10-18 |
BRPI0418562A (en) | 2007-06-19 |
CA2556751A1 (en) | 2005-09-01 |
ATE391864T1 (en) | 2008-04-15 |
CN1934371B (en) | 2012-03-14 |
DE602004013050D1 (en) | 2008-05-21 |
KR20070026424A (en) | 2007-03-08 |
KR101098013B1 (en) | 2011-12-22 |
WO2005080820A1 (en) | 2005-09-01 |
CN1930405B (en) | 2010-10-13 |
KR101235121B1 (en) | 2013-02-20 |
EP1735543A1 (en) | 2006-12-27 |
EP1735543B1 (en) | 2008-04-09 |
CN1930405A (en) | 2007-03-14 |
DE602004013050T2 (en) | 2009-07-09 |
EP1723348A1 (en) | 2006-11-22 |
CA2556750C (en) | 2014-04-15 |
KR20070027521A (en) | 2007-03-09 |
US7749118B2 (en) | 2010-07-06 |
WO2005080820A9 (en) | 2005-12-01 |
WO2005080821A1 (en) | 2005-09-01 |
ES2303055T3 (en) | 2008-08-01 |
CA2556751C (en) | 2015-04-21 |
US20070281814A1 (en) | 2007-12-06 |
EP1723348B1 (en) | 2012-06-06 |
US8388477B2 (en) | 2013-03-05 |
BRPI0418561A (en) | 2007-06-19 |
BRPI0418562B1 (en) | 2017-10-24 |
CA2556750A1 (en) | 2005-09-01 |
US20100240481A1 (en) | 2010-09-23 |
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